Hi Bruno The OBSERVATION class has a timing model that makes the timing explicit and adds handling of intervals and other concepts. For the timing of something in an observation (the clinically relevant time in HL7 v3) you need to look at the event time.
All times are valid when explicitly expressed in evaluations. I hope this is clear Bruno Cadonna wrote: > Hi Sam, > > Thank you for your reply! > > > So, to answer your question directly - if you want to enter the timing > > of any symptom in a computable form, it needs to be at the root of the > > observation. Thus associated symptoms cannot have different times that > > are computable. > > Does this mean all times not at the root of an OBSERVATION should not > be used for computations? > If yes, is this valid also for all times in ITEM_STRUCTUREs? > What about EVALUATIONs like diagnoses which have times only in > ITEM_STRUCTUREs? > > Cheers > Bruno > > > Sam Heard wrote: >> Hi Bruno >> >> The openEHR architecture does not allow embedded time series for >> observations. To have the timing of symptoms you need an event and >> all data related to that event (which may be a period) has a separate >> timing. >> >> The idea in this archetype I believe is to allow some simple >> associations to be explicit and to simplify the data entry >> requirements while allowing coding if required. >> >> So, to answer your question directly - if you want to enter the >> timing of any symptom in a computable form, it needs to be at the >> root of the observation. Thus associated symptoms cannot have >> different times that are computable. >> >> Cheers, Sam >> >> Bruno Cadonna wrote: >>> Hi all, >>> >>> In the archetype openEHR-EHR-CLUSTER.symptom.v3.adl there is a >>> CLUSTER archetype node with id at0020 with label "Associated >>> symptoms and events". >>> >>> Can a symptom A have an associated symptom B with onset date before >>> the onset date of the symptom A or with a duration exceeding the >>> duration of symptom A? >>> >>> Example: >>> A patient was diagnosed influenza and suffers from time point 1 to >>> time point 3 from chills, from time point 2 to time point 5 from >>> fever and from time point 4 to time point 6 from coughing. >>> Can chills and coughing be associated symptoms of fever? >>> >>> Or have associated symptoms totally other semantics? >>> >>> Cheers >>> Bruno >>> >>> _______________________________________________ >>> openEHR-clinical mailing list >>> openEHR-clinical at openehr.org >>> http://lists.chime.ucl.ac.uk/mailman/listinfo/openehr-clinical >> >> -- >> >> Dr Sam Heard >> Chief Executive Officer >> Director, openEHR Foundation >> Senior Visiting Research Fellow, University College London >> 214 Victoria Avenue >> Chatswood, NSW, 2067 >> Phone: +61 2 9415 4994 >> Mobile: +61 4 1783 8808 21 Chester Cres >> London E8 2PH >> Phone: +44 20 7249 7085 >> Mobile: +44 77 9871 0980 >> >> >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> openEHR-clinical mailing list >> openEHR-clinical at openehr.org >> http://lists.chime.ucl.ac.uk/mailman/listinfo/openehr-clinical > > _______________________________________________ > openEHR-clinical mailing list > openEHR-clinical at openehr.org > http://lists.chime.ucl.ac.uk/mailman/listinfo/openehr-clinical
